Revin Ivan
From Novosibirsk, Russia
Common russian riichi rating (CRR)
Rating date Jan. 8, 2026 (latest changes Jan. 7, 2026).
302 place (26.05).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (66.67 * 1.60 * 0.29 + 83.33 * 2.20 * 1 + 0 + 0 + 0) / (1.60 * 0.29 + 2.20 * 1 + 1 + 1 + 1) = 37.79308199225047
p2 = (83.33 * 2.20 * 1 + 66.67 * 1.60 * 0.29) / max_coefficients = 14.301003344481607
score = 37.79308199225047 * 0.5 + 14.301003344481607 * 0.5 = 26.04704266836604
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-05 | 302 | 27.12 -> 26.05 |
Akademgorodok: Riichi Mahjong Tournament 2024: 43% -> 29% |
| 2026-01-03 | 298 -> 302 | 27.12 | |
| 2025-12-27 | 293 -> 298 | 27.12 | |
| 2025-12-07 | 290 -> 293 | 27.12 | |
| 2025-12-06 | 285 -> 290 | 27.12 | |
| 2025-11-30 | 284 -> 285 | 27.12 | |
| 2025-11-25 | 285 -> 284 | 27.12 | |
| 2025-11-05 | 285 | 28.15 -> 27.12 |
Akademgorodok: Riichi Mahjong Tournament 2024: 57% -> 43% |
| 2025-11-04 | 281 -> 285 | 28.52 -> 28.15 | |
| 2025-11-01 | 281 | 28.49 -> 28.52 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 83 |
|
23/25 | 100% | 2.20 | CRR | Akademgorodok Riichi Mahjong Tournament 2025 | Novosibirsk | |
| 2 | 67 |
|
15/16 | 29% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 | Novosibirsk |